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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 10459:f78079947084

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some basic SPARC arithmetic works
author twisti
date Thu, 20 Jun 2013 20:40:52 -0700
parents 063a712fe8d8
children 699ee4e4f9dc
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.sparc;
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24
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25 import sun.misc.*;
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26
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.asm.*;
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30 import com.oracle.graal.asm.sparc.*;
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31 import com.oracle.graal.asm.sparc.SPARCAssembler.*;
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32 import com.oracle.graal.compiler.gen.LIRGenerator;
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33 import com.oracle.graal.hotspot.*;
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34 import com.oracle.graal.hotspot.sparc.SPARCHotSpotBackend.*;
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35 import com.oracle.graal.hotspot.bridge.*;
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36 import com.oracle.graal.hotspot.meta.*;
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37 import com.oracle.graal.hotspot.stubs.Stub;
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38 import com.oracle.graal.lir.*;
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39 import com.oracle.graal.lir.sparc.*;
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40 import com.oracle.graal.lir.asm.*;
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41 import com.oracle.graal.nodes.*;
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42
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43 import static com.oracle.graal.sparc.SPARC.*;
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44 import static com.oracle.graal.asm.sparc.SPARCAssembler.*;
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45 import static com.oracle.graal.asm.sparc.SPARCMacroAssembler.*;
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46 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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47 import static com.oracle.graal.api.code.ValueUtil.*;
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48 import static com.oracle.graal.phases.GraalOptions.*;
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49 import static java.lang.reflect.Modifier.*;
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50
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51 /**
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52 * HotSpot SPARC specific backend.
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53 */
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54 public class SPARCHotSpotBackend extends HotSpotBackend {
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55
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56 private static final Unsafe unsafe = Unsafe.getUnsafe();
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57
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58 public SPARCHotSpotBackend(HotSpotRuntime runtime, TargetDescription target) {
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59 super(runtime, target);
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60 }
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61
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62 @Override
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63 public LIRGenerator newLIRGenerator(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) {
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64 return new SPARCHotSpotLIRGenerator(graph, runtime(), target, frameMap, cc, lir);
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65 }
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66
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67 /**
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68 * Emits code to do stack overflow checking.
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69 *
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70 * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate
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71 * the current frame
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72 */
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73 protected static void emitStackOverflowCheck(TargetMethodAssembler tasm, boolean afterFrameInit) {
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74 if (StackShadowPages.getValue() > 0) {
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75 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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76 final int frameSize = tasm.frameMap.frameSize();
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77 if (frameSize > 0) {
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78 int lastFramePage = frameSize / unsafe.pageSize();
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79 // emit multiple stack bangs for methods with frames larger than a page
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80 for (int i = 0; i <= lastFramePage; i++) {
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81 int disp = (i + StackShadowPages.getValue()) * unsafe.pageSize();
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82 if (afterFrameInit) {
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83 disp -= frameSize;
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84 }
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85 tasm.blockComment("[stack overflow check]");
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86 // FIXME currently doesn't work; maybe frame size is wrong
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87 // new Ldx(new SPARCAddress(sp, -disp), g0).emit(masm);
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88 }
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89 }
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90 }
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91 }
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92
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93 class HotSpotFrameContext implements FrameContext {
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94
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95 final boolean isStub;
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96
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97 HotSpotFrameContext(boolean isStub) {
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98 this.isStub = isStub;
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99 }
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100
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101 @Override
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102 public void enter(TargetMethodAssembler tasm) {
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103 final int frameSize = tasm.frameMap.frameSize();
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104
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105 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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106 if (!isStub) {
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107 emitStackOverflowCheck(tasm, false);
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108 }
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109 new Save(sp, frameSize, sp).emit(masm);
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110
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111 if (ZapStackOnMethodEntry.getValue()) {
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112 final int slotSize = 8;
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113 for (int i = 0; i < frameSize / slotSize; ++i) {
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114 // 0xC1C1C1C1
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115 new Stx(g0, new SPARCAddress(sp, i * slotSize)).emit(masm);
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116 }
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117 }
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118 }
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119
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120 @Override
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121 public void leave(TargetMethodAssembler tasm) {
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122 SPARCMacroAssembler masm = (SPARCMacroAssembler) tasm.asm;
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123 new RestoreWindow().emit(masm);
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124 }
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125 }
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126
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127 @Override
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128 protected AbstractAssembler createAssembler(FrameMap frameMap) {
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129 return new SPARCMacroAssembler(target, frameMap.registerConfig);
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130 }
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131
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132 @Override
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133 public TargetMethodAssembler newAssembler(LIRGenerator lirGen, CompilationResult compilationResult) {
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134 SPARCHotSpotLIRGenerator gen = (SPARCHotSpotLIRGenerator) lirGen;
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135 FrameMap frameMap = gen.frameMap;
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136
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137 Stub stub = gen.getStub();
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138 AbstractAssembler masm = createAssembler(frameMap);
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139 // On SPARC we always use stack frames.
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140 HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null);
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141 TargetMethodAssembler tasm = new TargetMethodAssembler(target, runtime(), frameMap, masm, frameContext, compilationResult);
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142 tasm.setFrameSize(frameMap.frameSize());
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143 StackSlot deoptimizationRescueSlot = gen.deoptimizationRescueSlot;
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144 if (deoptimizationRescueSlot != null && stub == null) {
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145 tasm.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot));
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146 }
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147
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148 return tasm;
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149 }
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150
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151 @Override
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152 public void emitCode(TargetMethodAssembler tasm, LIRGenerator lirGen, ResolvedJavaMethod installedCodeOwner) {
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153 SPARCMacroAssembler asm = (SPARCMacroAssembler) tasm.asm;
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154 FrameMap frameMap = tasm.frameMap;
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155 RegisterConfig regConfig = frameMap.registerConfig;
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156 HotSpotVMConfig config = runtime().config;
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157 Label unverifiedStub = installedCodeOwner == null || isStatic(installedCodeOwner.getModifiers()) ? null : new Label();
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158
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159 // Emit the prefix
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160
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161 if (unverifiedStub != null) {
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162 tasm.recordMark(Marks.MARK_UNVERIFIED_ENTRY);
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163 CallingConvention cc = regConfig.getCallingConvention(JavaCallee, null, new JavaType[]{runtime().lookupJavaType(Object.class)}, target, false);
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164 Register inlineCacheKlass = g5; // see MacroAssembler::ic_call
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165 Register receiver = asRegister(cc.getArgument(0));
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166 SPARCAddress src = new SPARCAddress(receiver, config.hubOffset);
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167
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168 // new Ldx(asm, src, dst);
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169 // new Cmp(asm, inlineCacheKlass, dst);
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170 new Bpne(CC.Xcc, unverifiedStub).emit(asm);
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171 }
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172
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173 asm.align(config.codeEntryAlignment);
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174 tasm.recordMark(Marks.MARK_OSR_ENTRY);
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175 tasm.recordMark(Marks.MARK_VERIFIED_ENTRY);
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176
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177 // Emit code for the LIR
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178 lirGen.lir.emitCode(tasm);
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179
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180 HotSpotFrameContext frameContext = (HotSpotFrameContext) tasm.frameContext;
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181 if (frameContext != null && !frameContext.isStub) {
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182 tasm.recordMark(Marks.MARK_EXCEPTION_HANDLER_ENTRY);
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183 // SPARCCall.directCall(tasm, asm, runtime().lookupForeignCall(EXCEPTION_HANDLER), null, false,
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184 // null);
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185 tasm.recordMark(Marks.MARK_DEOPT_HANDLER_ENTRY);
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186 // SPARCCall.directCall(tasm, asm, runtime().lookupForeignCall(DEOPT_HANDLER), null, false, null);
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187 } else {
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188 // No need to emit the stubs for entries back into the method since
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189 // it has no calls that can cause such "return" entries
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190 assert !frameMap.accessesCallerFrame() : lirGen.getGraph();
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191 }
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192
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193 if (unverifiedStub != null) {
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194 asm.bind(unverifiedStub);
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195 // SPARCCall.directJmp(tasm, asm, runtime().lookupForeignCall(IC_MISS_HANDLER));
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196 }
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197 }
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198 }